I have a secretary who is a delegate of a director's calendar. We first set
up the delegation so the secretary only received copies of meeting invites,
but she received errors when trying to manipulate the entry if the director
had a mail waiting in her Inbox. We corrected that by making the secretary
sole delegate and only she receives the meeting invites. But now we are
finding older calendar entries that were updated but now can't be cancelled,
removed, changed, or deleted from the director's calendar. Not even the
director nor a mail admin can delete the entry. Any ideas on what is causing
this issue?